Topic: 130 rear tire

[Nicolai]

Hi All

I know that there are a ton of wheel/tire size threads here, but I cant seem to find an answer for my question in these threads. So sorry for starting yet another tire size thread...

I want to put a 130 rear tire on my cb500 because I like the look. Today I have a 1.85x18 rim and I know that this will not fit a 130 tire. So my question is what rim size will accommodate a 130 tire? I have seen 2.5 rims with 130 tire, but is that a good fit?

Br

Nicolai

[flybox1]

it might fit, but you'll sacrifice performance/handling/turn-in.

[CycleRanger]

Not even close. A 160 will safely fit.

Yeah, you're right, I was thinking wrong...    

[flybox1]

Not even close. A 160 will safely fit.

might be a few of those over in the Abomination Thread 

[Nicolai]

I have a spare cb750 wheel with a 130 tire and there is plenty of room but of course the hub does not fit the cb500

[Nicolai]

@Calj737: what size rim are you using?


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[Nicolai]

18"? 130/90-18?


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[Nicolai]

I guess that the tire has a bit larger diameter then than the stock wheel.

I was also looking at a 17" rim from the cb750 K7. A 130/90-17 has about the same diameter as my current 120/90-18.


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[flybox1]

Not even close. A 160 will safely fit.

might be a few of those over in the Abomination Thread 

Easy, Fly, I run a 130 on the rear of my 550 and it's really quite good handling. Matched with a 110 front, it makes for a very clever ride.

HAHA...no issues here with a 130 (and a properly matched front) But a rear 160?!?  Now you're compensating for something 

[Stev-o]

... the "90" is the percentage of the tread width in the sidewall.

Not sure I follow you here, Cal.

The "90" is the aspect ratio, and relates to the height of the side wall.  On a 120/90 tire, the sidewall height is 90% of 120mm [108mm].

Guessing that is what you meant.

[Retro Rocket]

My boy wants a 169, me, I'm limiting him to a 150 since the front will be a 120.

Nicolai - understand, the "90" is the percentage of the tread width in the sidewall. So a 130/90 is taller than a 120/90. You can drop to a 130/70-18 or 130/70-17 but you should bear in mind a 17" rear against an 19" front will affect your steering some.

Nothing wrong with running a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

[Stev-o]

Nothing wrong with r=unning a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

He will be running 17s front and rear. He just wants the meatiest tire despite the handling goals. It's a Young Guy thing I guess...

Bigger is better, right?!   Ha.   Remember the guy who had a 330 rest tire? We had some fun with him!

[Retro Rocket]

Nothing wrong with r=unning a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

He will be running 17s front and rear. He just wants the meatiest tire despite the handling goals. It's a Young Guy thing I guess...

Yes, I get that,  but you linked the rear tire size directly to the 120 front when  you said, "I'm limiting him to a 150 since the front will be a 120", I'd love to know why you think that's important...?    What size rims are you using on the young fella's bike again Cal..?

Bigger is better, right?!   Ha.   Remember the guy who had a 330 rest tire? We had some fun with him!

Only if it works... that 330 thing was a laugh, some thought it was photo shopped, remember...? 

[Stev-o]

Nothing wrong with r=unning a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

He will be running 17s front and rear. He just wants the meatiest tire despite the handling goals. It's a Young Guy thing I guess...

Yes, I get that,  but you linked the rear tire size directly to the 120 front when  you said, "I'm limiting him to a 150 since the front will be a 120", I'd love to know why you think that's important...?    What size rims are you using on the young fella's bike again Cal..?

Bigger is better, right?!   Ha.   Remember the guy who had a 330 rest tire? We had some fun with him!

Only if it works... that 330 thing was a laugh, some thought it was photo shopped, remember...? 

I do.  And his girlfriend got involved too.  I searched for it but couldn't find it.

[Retro Rocket]

Nothing wrong with r=unning a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

He will be running 17s front and rear. He just wants the meatiest tire despite the handling goals. It's a Young Guy thing I guess...

Yes, I get that,  but you linked the rear tire size directly to the 120 front when  you said, "I'm limiting him to a 150 since the front will be a 120", I'd love to know why you think that's important...?    What size rims are you using on the young fella's bike again Cal..?

Bigger is better, right?!   Ha.   Remember the guy who had a 330 rest tire? We had some fun with him!

Only if it works... that 330 thing was a laugh, some thought it was photo shopped, remember...? 

I do.  And his girlfriend got involved too.  I searched for it but couldn't find it.

Thats right, also pictures with fat chicks....

[Stev-o]

Nothing wrong with r=unning a 160 rear with a 120 front , the 120 on the front is irrelevant when compared to the rear Cal {unless going unusually small rim size in the rear}, all sport/ sport touring  bikes usually all run 120's on the front, they run up to a 180/200 on the rear, 120 seems to be the optimal size for a front tire as far as steering response is concerned, this has been the norm since about 1990 {on 17 inch rims}. A 150 rear would be better suited to a 110 front if using 18 inch rims, these are common classic racing sizes and work well... I have a set of GSXR rims in the shed that are 4.5 inch x 17 rear and 3.5 x 17 inch front, they run a 160x60x17rear and a 120x70x17 front factory sizes ..

He will be running 17s front and rear. He just wants the meatiest tire despite the handling goals. It's a Young Guy thing I guess...

Yes, I get that,  but you linked the rear tire size directly to the 120 front when  you said, "I'm limiting him to a 150 since the front will be a 120", I'd love to know why you think that's important...?    What size rims are you using on the young fella's bike again Cal..?

Bigger is better, right?!   Ha.   Remember the guy who had a 330 rest tire? We had some fun with him!

Only if it works... that 330 thing was a laugh, some thought it was photo shopped, remember...? 

I do.  And his girlfriend got involved too.  I searched for it but couldn't find it.

Thats right, also pictures with fat chicks....

I found it.  Was 6 years ago, how time flies......

[CycleRanger]

I found it.  Was 6 years ago, how time flies......

http://forums.sohc4.net/index.php/topic,63553.0.html

I was thinking the same thing...

[70CB750]

Not even close. A 160 will safely fit.

might be a few of those over in the Abomination Thread 

 

[Retro Rocket]

Yes, I get that,  but you linked the rear tire size directly to the 120 front when  you said, "I'm limiting him to a 150 since the front will be a 120", I'd love to know why you think that's important...?    What size rims are you using on the young fella's bike again Cal..?

That wasn't so much a "linking" as it was poor grammar. Front is a 3.5 and rear is a 4.25. Both are Sun rims.

He just wants the fat, modern Superbike kind of look, or modern Hooligan rubber aesthetic. Its good to still have the power to say "No" to some things 

150 is  the maximum i'd use on a 4.25x17, I wouldn't run a 160 on a 4.25x17, its a bit tight.... not trying to niggle but,  I wouldn't have gone with a 3.5 up front, the bike will steer better with a 100/110 on an 18 inch rim in 2,5/2.75 inch widths, even a 2.15 front rim would have done, even with the offset adjusted to suit, the rake on these bikes is better suited to 18 inch front rims and slightly less wide tires, thats why you don't see many of these bikes racing with 17 inch rims, even in Australia where lots of older bikes race now with 17's {1100 katana's, GS1000/1100, boldor {dohc} Honda's and the Z900/1000 variants.. ..  And yes, I do know what young fella's are like, sometimes its easier to bang your head against a wall than to try and give rounded advice...

[Retro Rocket]

Too late, GSXR front end using Cognito hubs front and rear. And yes, the 4.25 is perfect for a 150, not great for a 160.

Yes,  are you saying that an 18 inch rim can't be laced to those hubs..? Or did you buy the wheels complete with the 17 inch rims?.  I was thinking of buying one of the front hubs later on down the track to suit an 18 inch rim...

[Retro Rocket]

I love the look of wide spoked rims...

[Retro Rocket]

I think they will look pretty fresh on his bike. I'm using 18" F/R on my R90, also a GSXR hub but silver rims and stainless spokes.

Another reason I like 18's is because, they are just a touch more forgiving to undulations in the road surface, the slight longer rolling circumference helps. I've had a few bikes with 16 inch front wheels, you certainly feel the bumps more with smaller rims...